PERFORMANCE - Arnold Laver · Accoya® wood performance in indentation, scuffing and mechanical abrasion ... for 2.0m length scantling stability and adhesive bond delamination resistance

PERFORMANCE TESTING SUMMARY

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ALaver_28pp_p2_dw.indd 1 14/06/2016 09:42:46

CONTENTS

04 Durability comparison – SCION Accoya® wood is more durable than teak and other naturally durable species

05 15-year window L-joint test – BRE Accoya® wood L-joints exhibit no rot or decay after 15 years

06 3-year Accoya® face laminated window test – BRE The windows were rated ‘excellent’ (10/10)

07 Whole life costs Accoya® wood has lower life cycle cost

08 60-year service life – BRE BRE confirms 60 year service life for Accoya® in exterior applications

09 Formosan termite durability test – LSU Accoya® demonstrates durability in aggressive US termite tests

10 Field test – Kagoshima test site, Japan Accoya® demonstrate durability in 5 year decay and termite in ground tests, Southern Japan

11 Termite durability test Australia – AFRC Accoya® demonstrates significantly higher performance than other class 1 timbers in Australian termite tests

12 Termite attack and decay trial – Thailand Accoya® is demonstrating significantly higher performance than high quality Teak in field stake tests over a 5 year test period

13 15 and 20 year canal lining test Accoya® exhibits no rot or decay after water and soil exposure

14 Stability, durability and strength tests - TP Excellent results against US joinery test standard: water repellence, fungal durability and bending strength

15 9.5-year external coatings test – SHR Accoya® wood excels in external coatings tests

16 3.5-year external coatings test – BM Trada Black translucent coated Accoya® cladding outperforms pine and Siberian larch

17 Board stability test – BM Trada Accoya® wood outperforms Western Red Cedar, Larch and Pine

18 5-year coating test at Teknos - BM Trada Accoya®, translucent wood stain finish significantly outperforms vertical grain western red cedar and Siberian larch over 5 year period

20 Dimensional stability test – SHR Accoya® wood exhibits superior dimensional stability compared to other naturally durable species

21 Improved thermal performance – IFT Rossenheim and Buildcheck Accoya® wood offers improved thermal performance in the UK’s BFRC window assessment

22 Thermal gain - on decks, Japan Accoya® shows to have less thermal gain than WPC and thermally modified decks

23 Hardness and wear test – BM Trada Accoya® wood performance in indentation, scuffing and mechanical abrasion test

24 Carbon footprints – Verco Accoya® wood’s carbon footprint is less than steel, aluminium, PVC and unsustainably sourced tropical hardwood

26 Flame spread and smoke developed test - SwRI ASTM E84 C classification

2


TRIED,TESTEDAND PROVEN

INTRODUCTION

Accoya® wood is the result of over 80 years research and development. Combining the proven modification technique of acetylation with cutting-edge proprietary technology, this high performance wood is created for demanding outdoor applications; from windows to doors, decking to cladding, bridges to boats.

Wood for Accoya® is sourced from sustainable forests and manufactured using Accsys’ patented modification process. Its properties exceed those of the best tropical hardwoods and it can handle the most demanding jobs - even those that are presently only considered feasible with non-sustainable materials.

Accoya® is a highly proven product with testing from many different perspectives on a worldwide basis. Many tests have been conducted in real-world conditions over many years. This summary shows some of these results. Full reports of these and similar tests are available upon request. Many are already posted in the download section on accoya.com.

3


DURABILITY COMPARISON – SCION

Scion, formerly known as New Zealand Forest Research Institute Ltd, undertakes research and science and technology development in forestry, wood products, biomaterials and bioenergy. Scion tested the durability of Accoya® wood against other naturally durable and preservative treated timbers.

The harsh tests run exposed timbers in accelerated decay chambers and in exterior ground contact tests at the Whakarewarewa site. The tests have run for ten years and show Accoya® performing better than teak, merbau, cypress, cedar and H3.2 (above ground, uncoated horizontal) and H4 (in ground contact) preservative (CCA) treated timbers, proving that Accoya® has the highest possible durability classification.

Decay/insect damage rating system (based on ASTM D 1758)10 = No decay or insect damageT = Discolouration or trace of decay, not positively identified as decay9 = Minor decay, 0-3% of the cross section8 = Lightly established decay, 3-10% of the cross section7 = Well established decay, 10-30% of the cross section6 = Extensive and deep decay, 30-50% of the cross section4 = Deep and severe decay, more than 50% of the cross section0 = Failed

DECAY RATES OF FUNGUS CELLAR STAKELETS

[index of condition]

DECAY RATED FIELD STAKES


0 2 4 6 8 10

0 2 4 6 8 10

CCA H4CCA H3.2Radiata Pine

Merbau

Macrocarpa

Cedar

Teak

CCA H3.2

CCA H4

Accoya®

Accoya®

Time [yrs]

Time [yrs]

10

8

6

4

2

0

10

8

6

4

2

0

Accoya® stake after 10 years

4


The BRE (Building Research Establishment) is an independent institute based in Watford, UK.

In durability field testing to European Norm (EN) 330:1993 – which parallels America Wood-Preservers’ Association (AWPA) E9 – simple mortice and tenon joints (L-joints) are assembled, coated and placed outside, with the coating over the joint deliberately broken to allow water ingress that might be encountered if a joint is open, damaged or poorly maintained. This test represents a worst case scenario for joinery products and requires the coated wood to be exposed to normal environmental factors.

In February 1998, L-joints were installed at the BRE Garston field exposure site (Watford, UK) facing the prevailing south westerly weather on an elevated test rig. The acetylated wood condition is unchanged and continues to look good, while the unmodified wood has degraded completely.

* Test report from 2013

15-YEAR* WINDOW L-JOINT TEST – BRE

Non-acetylated wood showing major attack

Accoya® wood showing no rot or decay

Non-acetylated wood showing severe rot and decay

Accoya® wood showing no rot or decay

BRE REPORTED:

“In simulated accelerated joinery field trials that represent a worst case scenario joinery product by enabling moisture ingress into the joint pine, sapwood wood L-joints acetylated to a slightly lower modification level than Accoya®, after 15 years exposure in the UK are performing very well. The trial indicates that a permeable timber species that is acetylated through the cross section to a durability class 1 level (e.g. Accoya®), would have a grading lower than the reference preservative TnBTO – and thus Accoya® would exceed the biological reference value and would be deemed to provide sufficient protection for long life window joinery.”

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Two window frames made from face laminated Accoya® / pine / pine wood were installed in the BRE Window Joinery Test building in June 2012, facing South to maximise solar irradiance. One window frame was coated with a translucent finish, and one with an opaque white finish.

Additionally, a range of durability and dimensional stability tests have been completed at IFT Rossenheim, Germany according to standard methods for 2.0m length scantling stability and adhesive bond delamination resistance. The tests have been completed for Accoya®-Pine-Pine and Accoya®-Spruce-Spruce combination. The scantlings met both requirements. Reports are available upon request.

3.5-YEAR FACE LAMINATED ACCOYA WINDOW TEST – BRE

AFTER 36 MONTHS OF EXPOSURE, THESE FRAMES WERE INSPECTED ON:

General condition

Appearance excellent

Joint condition

Excellent, joints tight, coating intact, no evidence of movement or opening

Bead condition

Excellent

Coating condition

Excellent, bright, no signs of deterioration or discoloration

Operation

Movement of opening light was easy

This resulted in an ‘excellent’ overall rating (10/10).

6


A study with a Dutch window producer and a maintenance company shows that Accoya® is initially more expensive but has a lower total cost than PVC, aluminium, pine and hardwood windows over the life of the home.

ACCOYA WOOD:

- Ensures lower maintenance costs- Ensures longer time between maintenance- Has extended durability and won’t need

replacing for 50+ years

LIFE CYCLE COST FOR WINDOW FRAMES IN A TYPICAL DUTCH HOME

[in €1,000]

0 10 20 30 40 50

Life maintenance cost

Initial cost

Aluminium

Spruce - Hardwood

Meranti

PVC

Accoya®

Time [yrs]

50

40

30

20

10

0

COST EFFECTIVENESS PER WINDOW FRAME

[in £ per 60+ year]

PVC Accoya® Aluminium Pine Meranti

40

30

20

10

0

SUPERIOR WHOLE LIFE COST FOR WINDOWS

7


After running tests and reviewing external and independent data, the BRE concluded that Accoya® wood, provided best design practice is followed, has a service life expectancy of 60 years when used in exterior applications such as windows, doors, cladding and balconies. The BRE stated that Accoya® wood shows excellent durability and stability properties. This position has been positively corroborated by TRADA and Heirott Watt University / Imperial College London conducting similar service life reviews.

“We consider that joinery, cladding and balconies prepared from Accoya® will show significantly improved coating performance properties. If the products are designed and built to the principles of best practice (to minimise moisture ingress and maximise water shedding), factory finished using quality coatings such as Sikkens or Teknos, installed by competent contractors and linked to a recognised best practice maintenance and care package, it will provide exterior wood products of outstanding durability and dimensional stability that would meet a 60-year service life requirement.”

60-YEAR SERVICE LIFE- BRE

8


Coptotermes formosanus, known as Formosan termites, are considered one of the world’s most aggressive termite species. Louisiana State University (LSU) conducted a 99 day Formosan termite ‘choice’ test, using untreated radiata pine and Accoya® wood (2” x 4” lumber).

All four sides of the untreated radiata pine were attacked and left structurally compromised. In stark contrast, Accoya® wood only exhibited slight grazing. The results of standardised testing show that Accoya® wood was 22 times better than the untreated radiata (when measured by sample weight loss).

Additional testing by TPI at their exposure sites in Gainesville Florida and Cost Rica demonstrate that Accoya® performance exceeds that of high quality (FEQ) teak. The results were developed over a 5 year field trial period in accordance with AWPA E7-09 in ground stake test and AWPA E18-06 ground proximity test. Performance level was used to support the qualification of Accoya® for use in termite zones and ‘in ground’ application in the ICC ESR-2825 which confirms Accoya® decking compliance with US Building Code.

FORMOSAN TERMITE DURABILITY TEST – LSU

Accoya® wood Non-Accoya® wood

Non-Accoya® woodAccoya® wood

WEIGHT LOSS IN LSU FORMOSAN TERMITE TEST[%]

New Zealand Radiata (leached)

New Zealand Radiata (unleached)

Chilean Radiata (leached)

Chilean Radiata (unleached)

Southern Pine(leached)

Southern Pine(unleached)

30

20

10

0

Untreatedwood

Accoya®wood

9


The extreme field test conducted was primarily against two different types of termites in two locations of the field site located in Kagoshima, South Japan. The site is used by JWPA for assessment on the basis of the warm and wet climate, coupled with presence of Coptotermes formosanus in the dry area and Reticulitermes speratus is active in a wet area of the site. Collectively the sites also have an assortment of rot fungi present including white and brown rots.

FIELD TEST – JWPA KAGOSHIMA TEST SITE, JAPAN

Accoya® wood wet test site

Accoya® wood dry test site

Non-Accoya® wood wet test site

Non-Accoya® wood dry test site

FIELD TRIAL EXPOSURE TO C. FORMOSANUS

[mean rating: 0=sound, 100=collapse of stake]

0 1 2 3 4 5

Radiata Pine

Accoya®

Time [yrs]

100

80

60

40

20

0

After 5 years of testing, no signs of termite attack were detected on any Accoya® test specimen. At the five year mark for the decay tests, the Accoya® is still completely unscathed, where nearly all untreated bait stakes of radiata pine, used as controls and typically changed each year were so badly decayed that only the portions above ground remained.

10


TERMITE DURABILITY TEST AUSTRALIA – AFRC

Mastotermes darwiniensis is the most destructive species of Australian termite and active north of the Tropic of Capricorn Hazard Class 3 above ground testing was set up in Northern Territory, Australia according to the AWPA protocol by the Australian Forest Research Company.

At the conclusion of the field trial all test specimens had evidence of contact by M. darwiniensis, and all untreated Eucalyptus nitens bait-wood, used as a susceptible and attractive food source for maintaining the presence of termites in exposure containers, had been destroyed. The mean mass loss of the untreated radiata pine sapwood was 95%.

All four of the naturally durable reference hardwood timber samples were significantly attacked by M. darwiniensis, with mean mass losses ranging from 49% to 100%. The PNG Rosewood was the most resistant to attack, whilst all of the American white oak test specimens were destroyed.

The performance of the Accoya® Radiata was markedly superior to that of all the naturally durable reference hardwood timber samples. The mean mass loss was 8.5%. Accoya® Radiata would be expected to perform well, and to a much higher level than timbers with equivalent natural durability to those species investigated in this work, against termites in all regions of Australia.

Additional testing run at AFRC in accordance with AWPA protocol include performance evaluation in field testing against Coptotermes acinaciformis and fungal decay testing alongside spotted gum, a durability class 1 rated timber and density of 1,050kg/m³. Accoya® performance matched spotted gum with very low attack in the Coptotermes field trial and bettered spotted gum in the fungal decay testing with almost no attack (<1.0%)

Accoya®

PNG Rosewood

Western Red Cedar

Spotted Gum

Radiata Pine

American White Oak

MASS LOSS IN HAZARD CLASS H3 FIELD TRIAL EXPOSURE TO M. DARWINIENSIS

[%]

Accoya® PNG Rosewood

Western Red Cedar

Spotted Gum

Radiata Pine

American White Oak

100

75

50

25

0

11


TERMITE ATTACK AND DECAY TRIAL, THAILAND

A test conducted by the Environmental Research Centre, Naresuan University involved setting up ground stake tests at sites around Thailand.

Test stakes were Accoya®, Teak and Makha. After 60 months (5 years) Accoya® is demonstrating significantly higher performance than Makha hardwood and high quality Teak. This superior performance relative to high quality teak corroborates termite and decay evaluation tests reported in earlier pages of this brochure in Florida, Costa Rica and New Zealand

0 1 2 3 4 5

Makha

Teak

Accoya®

Time [yrs]

10

8

6

4

2

0

DECAY RATING


0 1 2 3 4 5

Makha

Teak

Accoya®

Time [yrs]

10

8

6

4

2

0

TERMITE RATING


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15 AND 20 YEAR CANAL LINING TESTS

Accoya® wood’s high performance was proven with two Dutch project tests in the Flevopolder near Almere, one installed in 1995 and one in 2000. The SHR institute in the Netherlands originally set up the tests and made detailed inspections at respective 15 and 20 year exposure periods in 2015.

These tests include acetylated wood alongside control wood, preservative treated wood and hardwood species, used as a canal lining (fresh water exposure). These canal bank conditions are particularly punishing, especially at the waterline, since the wood is exposed to a combination of water, microbe rich soil and air (oxygen). Both trials show hardly any sign of rot, decay or fungal damage in acetylated wood – highlighting its class 1 durability status and reinforcing the 25-year warranty. From these test results, SHR concludes that the durability of acetylated wood in fresh water applications competes with highly durable hardwood species and professionally preserved wood.


13


STABILITY, DURABILITY & STRENGTH TESTS – TP

Timber Products Inspection (USA) undertook a number of thorough and independent tests to analyse Accoya® wood’s durability, stability and strength performance characteristics in accordance with the USA’s Window & Door Manufacturers Association (WDMA) requirements.

Accoya® wood outperformed radiata pine in accelerated decay chambers highlighting its durability. The results showed that Accoya® wood had a very low weight loss percentage for both brown rot (Gloeophyllum trabeum) and white rot (Trametes versicolor) fungi against such types of decay.

TP also evaluated mechanical properties. Overall, the properties of Accoya® are essentially the same as those of the untreated (radiata pine) control. The MOR and WML values of Accoya® are slightly higher and the average MOE value of Accoya® is slightly lower than that of untreated radiata pine unlike some wood modification techniques that cause significant reductions in strength.”

The final test proved that Accoya® meets WDMA’s stringent rot resistance requirements, which means it’s an ideal choice for windows and doors.

WEIGHT LOSS IN DECAY TEST

[%]

TPI CONCLUSIONS

[index]

Trametes versicolour fungus

Gloeophyllum trabeum fungus

MOR (Modulus of Rupture - ultimate bending strength)

MOE (Modulus Of Elasticity - Young’s Modulus)

WML (Work to maximum Load)

25

20

15

10

5

0

125

100

75

50

25

0

UntreatedRadiata Pine

Accoya®wood

14


9.5-YEAR EXTERNAL COATINGS TEST – SHR

Independent testing institute SHR Timber Research in The Netherlands conducted a comprehensive coatings test on Accoya® and untreated wood with opaque and film forming paints and stains.

Accoya® wood outperformed all other timbers, with better coating performance and superior coating adhesion in both wet and dry conditions. The white opaque performed extremely well, requiring no maintenance after 9.5 years – which is an important benefit in the long-term life cost of the product and ensures that Accoya® has a superior whole life cost compared to competing materials.


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Accoya® wood cladding Siberian Larch cladding Pine cladding

3.5-YEAR EXTERNAL COATINGS TEST – BM TRADA

Leading timber research institute, BM Trada, was commissioned by Accsys Technologies to perform a series of exposure trials.

The trials using the same coating began in February 2007 in Buckinghamshire, England and tested Accoya® cladding board’s resistance to natural weathering and splitting in comparison to pine and Siberian larch.

After 3.5 years, Accoya® wood was found to outperform the competing cladding boards in a number of ways – showing excellent coating performance. Pine cladding boards showed severe levels of fissuring, resin exudation, end fissuring, paint peeling over fissures, shelling, surface checking and board distortion; whilst Siberian larch was found to have extensive surface checking and burst resin pockets.

Accoya® wood, however, had a flat surface with no grain raising, virtually no shelling, cracking, checking or fissuring. External dirt was easily cleaned off revealing a sound clean surface with no coating issues. This harsh test proves that Accoya® wood has superior coating performance compared to many competing materials. This test, using a translucent black coating for maximum radiant heat build is a particuarly difficult situation for wood products. The results have provided the confidence to recommend Accoya® with black coatings around the world, including Australia - with positive real world results.

16


BOARD STABILITY TEST – BM TRADA

Leading timber research institute, BM Trada, tested the stability of Accoya® wood against other widely used cladding materials by exposing coated boards to a high humidity environment and letting them acclimate.

BM Trada found that Accoya® wood had exceptional stability and stated that Accoya® used for cladding boards could increase from standard 150mm wide profiles to 200mm when used externally.

This increased width specification board shows Accoya® wood’s design flexibility and superior performance when compared to western red cedar, larch and pine.

Siberian Larch

Western Red Cedar

Accoya®

Thermowood

0 50 100 150 200 250

Siberian Larch

Western Red CedarPineThermowood

European Larch

Accoya®

Time [hours]

5

4

3

2

1

0

CUPPING DISTORTION

[mm]

17


A weathering test was set up by Teknos (UK) Ltd, a leading coating supplied to the factory applied window, door and cladding industry across Europe. The test began in March 2009 to obtain natural weathering performance data, end grain sealing and profile design impact of three different timber substrates (coated) and on different cladding profiles. Apart from Accoya®, Western red cedar (WRC) and Siberian larch were included in the test rig.

After 7 years of natural exposure, the Accoya® boards have exhibited the best performance and have shown excellent stability, which has served to significantly reduce splitting and fissuring at board ends, prevented distortion and fissuring around fixings as well as extending the expected lifetime of the coating.

Coated boards made from Western red cedar and Siberian larch are now in need of immediate maintenance whereas the Accoya® boards are yet to show any significant deleterious effects of weathering after five years and suggests this is likely to be an important factor in the overall reduction of maintenance frequency and costs.

7-YEAR COATING TEST AT TEKNOS– BM TRADA

Siberian Larch

Western Red Cedar

Accoya®

2 end grain sealer coats



1 end grain sealer coat



18


TONGUE-AND-GROVE CLADDING FAILURE

[%]

2 1 0

Accoya®

2 1 0

Siberian Larch

2 1 0

No failure

Western Red Cedar

End grain sealer coat layers

100

80

60

40

20

0

Nail splits / discoloration

End fissures

Nail heads flush / sunken

19


Leading Dutch timber research institute, SHR, undertook a series of tests to evaluate the dimensional stability of Accoya® wood.

Accoya® wood outperformed a wide range of competing timber products such as Teak, Iroko, Sapelle, Scots pine, Western red cedar, Japanese cypress, Japanese cedar and Radiata pine. This significant improvement in dimensional stability of Accoya® over all other timber provides short and long term benefit. In the short term, Accoya® remains stable during processing. In the medium term, joinery remains stable and resists movement when environmental conditions fluctuate after installation. Further on in service, deck boards remain flat, stable around fixings and with practically no splinters. Cladding boards and louvres retain their flush and smooth lines and coated products benefit from the board stability placing less stress on the coating and leading to requiring earlier maintenance.

Data on teak, iroko, sapele and scots pine have been extracted from published data:

Physical and related properties of 145 TimbersJan F. Rijsdijk and Peter B. LamingKluwer Academic PublishersISBN 0-7923-2875-2

DIMENSIONAL STABILITY TEST – SHR

TANGENTIAL SHRINKAGE

[%]

VOLUME SHRINKAGE

[%]

Accoya® Teak Iroko Sapele Scots Pine Accoya® Teak Western Red Cedar

Japanese Cypress

Japanese Cedar

Radiata Pine

10

8

6

4

2

0

10

8

6

4

2

0

20


Thermal value is a critical aspect in window and door design. The thermal conductivity of the wood (lambda value) makes a significant contribution to the overall window frame calculated thermal value.

Accoya® thermal conductivity has been assessed by IFT Rossenheim, Germany in accordance with EN1226: 2001 and then developed into the required declared value format, under by the most rigorous European assessment methods by the EN ISO 10456: 2008 procedure for determination of declared and design thermal values.

In comparison to other standard wood types for joinery, Accoya® thermal conductivity is:

- Superior to softwood by 8%- Superior to hardwood by 30%

These improved levels provide options in design, in terms of achieving a higher U-Value for the same window design by switching timber type, or alternatively using a more preferred aesthetic or production friendly design without significantly compromising energy efficiency.

Accoya® is regularly used to achieve A rated windows under the UKs BFRC Window Energy Rating Program where other woods in the same design would not meet this standard.

IMPROVED THERMAL PERFORMANCE – IFT ROSSENHEIM AND BUILDCHECK

DECLARED λ

[W/m·K]

Accoya® Softwood Hardwood

0.20

0.15

0.10

0.05

0

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THERMAL GAIN ON DECKS, JAPAN

Thermal gain on decks and terraces is a particular issue in the summer season. A thermogram image analysis was arranged in Japan with the Hiroshima Prefectural Technology Research Institute to assess differences between Accoya®, thermally modified wood and three variants of commercial WPC decking.

The ambient temperature during the testing of all decks was 32°C. Deck board dimensions were comparable for all three types:

- Accoya® 26 x 140 - Thermally modified wood 26 x 140- WPC 25 x 145

The thermograms clearly indicate thermal gain in Accoya® is substantially less than the alternatives tested.

This low level of thermal gain, combined with in-situ benefits derived from Accoya® dimensional stability provide deck boards which are truly ‘barefoot friendly’. In-situ benefits derived from Accoya® stability are the boards resisting cupping and remaining flat, the fixings not being stressed and remaining flush, and finally, the boards not suffering splintering with prolonged weathering.

20°C 39°C 41°C 43°C 45°C 47°C 49°C 51°C 53°C 55°C 57°C 59°C

Accoya® Thermally modified wood Wood plastic composite

22


Independent testing from leading timber research institute, BM Trada, proved that Accoya® wood can withstand harsh, abrasive environments.

BM Trada’s testing showed that hardening that occurs as a result of the Accoya® process results in greater resistance to indentation than western red cedar and two types of larch. This is particularly useful when making specification choices for cladding and ground floor exterior products.

Separate scuffing and mechanical abrasion tests carried out by BM Trada show that Accoya® wood is just as good, if not better than the two types of larch, and significantly better than Western Red Cedar.

HARDNESS & WEAR TEST – BM TRADA

Siberian Larch

Western Red Cedar

Thermowood

Accoya®

MEAN HARDNESS LOAD

[kN]

Accoya® European Larch

Siberian Larch

Thermo- wood

Western Red Cedar

5

4

3

2

1

0

TABER ABRASION WEIGHT LOSS

[g]

0 500 1000 1500 2000 Revolutions [rpm]

5

4

3

2

1

0

Accoya®European LarchSiberian LarchWestern Red Cedar

Thermowood

4 wood types compared for

scuff résistance by the Snell

Capsule Method at TRADA

23


CARBON FOOTPRINTS – VERCO

The environmental performance of Accoya® is thoroughly tested and published following uncompromising leading independent international methodologies such as Life Cycle Analysis (LCA following ISO 14040/44) and Environmental Product Declarations (EPD following EN 15804). The results from these studies are available for download on the Accoya® website and underline the benign environmental performance of Accoya® wood. For example, official carbon footprint studies show that Accoya® wood is an environmentally compatible, even carbon negative, substitute for carbon intensive materials such as plastics, metals and concrete, as well as for various wood species.

CARBON FOOTPRINT – CRADLE TO GATE

In a carbon footprint assessment, the greenhouse gas emissions (GHG) during the life cycle of a material can be measured, and compared to alternative products in terms of kg CO² equivalent (CO²e). A carbon footprint assessment was executed for Accoya® woodby Verco in line with the World Business Council for Sustainable Development and World Resources Institute’s Greenhouse Gas Reporting Protocol best practice guidelines, based on a cradle to gate scenario, thus until the factory gate. This includes sourcing, harvesting and processing of the input timber, as well as all energy and raw material consumption and waste production in the acetylation plant of Accsys Technologies in Arnhem, the Netherlands. The results are shown in the graph to the right.

GREENHOUSE GAS EMISSIONS PER M³ OF MATERIAL

[1,000 kg CO² eq]

Aluminium

Steel

Red Meranti (unsustainably sourced)

Azobe (unsustainably sourced)

PVC

Western Red Cedar (unsustainably sourced)

Concrete

Ceramic tile

Plywood (sustainably sourced)

MDF (sustainably sourced)

Azobe (sustainably sourced)

Red Meranti (sustainably sourced)

Accoya® (Radiata Pine)

Accoya® (US Alder)

Accoya® (EU Alder)

Western Red Cedar (sustainably sourced)

Accoya® (Scots Pine)

0 5 10 15 20 25

24


CARBON FOOTPRINT – CRADLE TO GRAVE

The figure above shows the greenhouse gas emissions per m³ of Accoya® wood from the Verco report, translated into real life application of a window frame by Delft University of Technology, in order to account for the use-phase aspects such as material use, durability, carbon sequestration (following PAS 2050 guidelines), maintenance and recycling scenarios.

The results show that Accoya® scores significantly better than metals (aluminium), plastics (PVC), and unsustainably sourced hardwood and is on par with sustainably sourced (certified) hardwood. In case locally sourced wood is used to produce Accoya, it is the best choice from environmental point of view, not yet including the better performance characteristics such as the improved dimensional stability and UV resistance. Interestingly, because of the limited emissions during production, carbon credits that can be ‘earned’ through i) temporary carbon storage during use (especially in case of a long lifespan) and ii) incineration for electricity in the End of Life phase, all sustainably sourced wood alternatives, including Accoya, are CO² negative overthe full life cycle.

It should be noted that the annual yield of renewable materials is not included in the carbon footprint, which provides an important additional environmental advantage to wood, and in particular for Accoya based on Radiata Pine, over non renewable materials. For example, the availability of sustainably sourced Meranti is limited, which makes illegal sourcing – with its catastrophical consequences – of this slow growing hardwood species from tropical forests a reality which often occurs.

GREENHOUSE GAS EMISSIONS PER WINDOW FRAME (CRADLE TO GRAVE)[kg CO² eq]

Accoya® (Scots Pine)

Red Meranti (sustainably sourced)

Accoya® (European Alder)

Accoya® (USA Alder)

Accoya® (Radiata Pine)

PVC / Steel Alumimium Red Meranti(unsustainably sourced)

400

300

200

100

0

-100

25


In March 2009, Southwest Research Institute undertook Flame Spread Tests and Smoke Developed Tests in accordance with the standard test method for surface burning characteristics of building materials NFPA 255 (ASTM E84, UL 723 & UBC 8-1).

The conclusion of the Flame Spread Test results is that Accoya® wood can be classified within the range of standard timber species and achieves Class C in this US rating system.

Flame Spread Classification Flame Spread IndexClass I (or A) 0 - 25Class II (or B) 26 - 75Class III (or C) 76 – 200

Please see Accoya® Wood Information Guide for European classification D in EN14915.

FLAME SPREAD TEST AND SMOKE DEVELOPED TEST - SWRI

FIRE SPREAD INDEX*

[index]

Lodgepole Pine

Accoya® Oak Sitka Spruce

Maple Birch Cottonwood

120

110

100

90

80

SMOKE DEVELOPED INDEX*

[index]

Yellow Cedar

Oak Eastern White Pine

Accoya® Lodgepole Pine

Western Red Cedar

* data source: USDA (United States Dept of Agriculture) Wood Handbook. Lower numbers equal less flame spread or smoke.

250

200

150

100

50

26


IMPROVINGPERFORMANCE,REDUCINGENVIRONMENTAL IMPACT

For more information and to download the latest test reports on Accoya’s outstanding performance, tested by leading independent institutes, then visit the download section at www.accoya.com

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www.accoya.com

C2CAccoya® wood is one of the very few building products to have acquired Cradle to CradleSM Certification on the elusive C2C Gold Level, and for the category Material Health even at Platinum level, the highest possible!. Cradle to Cradle provides a means to tangibly and credibly measure achievement in environmentally-intelligent design including the use of environmentally safe and healthy materials and instituting strategies for social responsibility. As a result, specification of Accoya® also yields additional credits in LEED v4, BREEAM and Google’s Healthy Materials Portal, Portico.

FSC®Of the various schemes for sustainability forestry available, the Forest Stewardship Councils (FSC®) is regarded as the leading and most comprehensive certification programs available.

AIA & RIBAContact us to arrange an Architectural Institute Accredited CPD or CEU presentation.

ACCOYA® ACCREDITATIONS

30860007

CCMQ 39/14

QUA

LITÉ CONTROLÉE

Accoya® and the Trimarque Device are registered trademarks owned by Titan Wood Limited, a wholly owned subsidiary of Accsys Technologies PLC, and may not be used or reproduced without written permission. Accoya® wood should always be installed and used in accordance with the written instructions and guidelines of Accsys Technologies and/or its agents (available upon request). Accsys Technologies accepts no liability for any defect, damage or loss that may occur where such written instructions and guidelines are not adhered to. The information contained within this document has not been independently verified, and no warranty (express or implied) or representation is given in respect of the same, including without limitation as to its accuracy, completeness or fitness for any purpose. Accsys Technologies and its affiliates, officers, employees or advisers expressly disclaim any liability to the fullest extent permitted by law for any loss or damage whatsoever arising in respect of such information or the result of having acted upon it.

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For more information please visit: www.laver.co.uk

www.accoya.com

C2CAccoya® wood is one of the very few building products to have acquired Cradle to CradleSM Certification on the elusive C2C Gold Level, and for the category Material Health even at Platinum level, the highest possible!. Cradle to Cradle provides a means to tangibly and credibly measure achievement in environmentally-intelligent design including the use of environmentally safe and healthy materials and instituting strategies for social responsibility. As a result, specification of Accoya® also yields additional credits in LEED v4, BREEAM and Google’s Healthy Materials Portal, Portico.

FSC®Of the various schemes for sustainability forestry available, the Forest Stewardship Councils (FSC®) is regarded as the leading and most comprehensive certification programs available.

AIA & RIBAContact us to arrange an Architectural Institute Accredited CPD or CEU presentation.

ACCOYA® ACCREDITATIONS

30860007

CCMQ 39/14

QUA

LITÉ CONTROLÉE

Accoya® and the Trimarque Device are registered trademarks owned by Titan Wood Limited, a wholly owned subsidiary of Accsys Technologies PLC, and may not be used or reproduced without written permission. Accoya® wood should always be installed and used in accordance with the written instructions and guidelines of Accsys Technologies and/or its agents (available upon request). Accsys Technologies accepts no liability for any defect, damage or loss that may occur where such written instructions and guidelines are not adhered to. The information contained within this document has not been independently verified, and no warranty (express or implied) or representation is given in respect of the same, including without limitation as to its accuracy, completeness or fitness for any purpose. Accsys Technologies and its affiliates, officers, employees or advisers expressly disclaim any liability to the fullest extent permitted by law for any loss or damage whatsoever arising in respect of such information or the result of having acted upon it.

BirminghamDudley Road, Oldbury, B69 3DATel: 0121 552 7788 [email protected]

Bradford, Canal Road, BD2 1ARTel: 01274 [email protected]

BristolBrabazon Hangar, Filton, BS99 7ARTel: 0117 312 [email protected]

HullCrowle StreetHU9 IRHTel: 01482 [email protected]

KidderminsterFirs Trading Estate,Oldington Lane, DYI I 7QNTel: 01562 [email protected]

LeedsPontefract Road, Stourton, LS10 1SWTel: 0113 270 [email protected]

London124 New Road, Rainham, RM13 8RSTel: 01708 [email protected]

ManchesterLiverpool Road, Cadishead, M44 5BZTel: 0161 777 [email protected]

NewcastleWagonway Road, Hebburn, NE31 1SPTel: 0191 428 [email protected]

ReadingBasingstoke Road, RG2 OQNTel: 0118 975 [email protected]

Sheffield MosboroughOxclose Park Road North, S20 8GNTel: 0114 276 [email protected]

To make a product enquiry for Accoya please contact your local Arnold Laver Depot using the contact details provided below


Documents

PERFORMANCE - Arnold Laver · Accoya® wood performance in indentation, scuffing and mechanical abrasion ... for 2.0m length scantling stability and adhesive bond delamination resistance